| 改进型多态性密码的安全机制研究 |
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| 引用本文： | 尹毅峰,胡予濮.改进型多态性密码的安全机制研究[J].计算机科学,2009,36(11):71-74. |
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| 作者姓名： | 尹毅峰 胡予濮 |
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| 作者单位： | 1. 西安电子科技大学CNIS重点实验室,西安,710071;陕西国防工业职业技术学院电子工程系,西安,710300
2. 西安电子科技大学CNIS重点实验室,西安,710071 |
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| 摘 要： | 和大多数通常已知的对称性加密算法(包括AES的代表算法,例如Rijndael和Twofish)相比较,多态性密码可以抵御差分密码攻击.这种算法主要用于磁盘文件的加密.要解决的问题是在P2P网络中改进多态性密码机制,为通信双方提供大量安全的会话密钥.构造了满足严格雪崩准则和输出位独立性的强单向函数,并对其进行了安全性分析,用实验数据和相关理论进行了论证.
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| 关 键 词： | 多态性密码 严格雪崩准则 强单向函数 |
| 收稿时间： | 2008/12/15 0:00:00 |
| 修稿时间： | 3/2/2009 12:00:00 AM |
Security Analysis of Mechanisms for the Improved Polymorphic Cipher |
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| YIN Yi-feng,HU Yu-pu.Security Analysis of Mechanisms for the Improved Polymorphic Cipher[J].Computer Science,2009,36(11):71-74. |
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| Authors: | YIN Yi-feng HU Yu-pu |
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| Affiliation: | (Key Laboratory of Computer Network & Information Security,Xidian University,Xi'an 710071 , China); (Electronic Engineering Department ,Shanxi Institute of Technology,Xi'an 710300,China) |
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| Abstract: | In contrast to most or all commonly known symmetric encryption algorithm designs (including the AES candilates such as Rijndacl and Twofish),the Polymorphic Cipher (PMC) can immunize differential power attack. The algorithm is mostly used to encrypt disk files. The problem that would be solved is to improve the Polymorphic Cipher in
P2P,and to provide mass produced session keys for two parties across a communication channel. A strong oncway function satisfing the Strict Avalanche Criterion (SAC) was constructed. The security of the function was analyzed by some experimental results and correlated theories. |
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| Keywords: | P2P Polymorphic cipher Bit independence criterion Strong one-way function |
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